Medical bed



FIG. 1 is a perspective view of a medical bed in accordance with our design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines in the drawings are employed to show unclaimed portions of the medical bed, and form no part of the claimed design. 

CLAIM The ornamental design for a medical bed, as shown and described. 